5306-00-078-0144, BOLT,INTERNALLY RELIEVED BODY

National Stock Number:
5306-00-078-0144

Federal Supply Class:
5306

National Item Identification Number:
000780144

Description:
BOLT,INTERNALLY RELIEVED BODY

Detail:
An externally threaded fastener whose external threaded portion is of one nominal diameter. It has a concentric hole along the longitudinal centerline which may extend a part or the full length of the bolt. The concentric hole along the centerline may be counterbored and/or internally threaded at the head end or the bolt end. The head is designed to be held or driven by an external and/or internal driver. For items having a hole(s) perpendicular to the axis which meet the concentric hole along the longitudinal centerline, see BOLT, FLUID PASSAGE.

Manufacturer Information:

10107390

18876

U S ARMY AVIATION AND MISSILE COMMAND

Techincal Specification:

FASTENER LENGTH	1.375 INCHES NOMINAL
FEATURES PROVIDED	FINISHED HEAD
HEAD HEIGHT	0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM
HEAD STYLE	HEXAGON
INTERNAL THREAD CLASS	2B CONCENTRIC HOLE
INTERNAL THREAD DIRECTION	RIGHT-HAND CONCENTRIC HOLE
INTERNAL THREAD LENGTH	0.312 INCHES NOMINAL CONCENTRIC HOLE
MATERIAL	STEEL CORROSION RESISTING OVERALL
NOMINAL THREAD DIAMETER	0.750 INCHES
NOMINAL THREAD SIZE	0.138 INCHES CONCENTRIC HOLE
SPECIAL FEATURES	PELLET TYPE LOCKING ELEMENT IN THREADS
WIDTH BETWEEN FLATS	1.100 INCHES MINIMUM AND 1.125 INCHES MAXIMUM
STYLE DESIGNATOR	CONCENTRIC HOLE THREADED
SURFACE TREATMENT	PASSIVATE OVERALL
THREAD CLASS	2A
THREAD DIRECTION	RIGHT-HAND
THREAD LENGTH	1.340 INCHES MINIMUM
THREAD SERIES DESIGNATOR	UNIFIED NATIONAL COARSE (UNC)
THREAD SERIES	UNIFIED NATIONAL COARSE (UNC) CONCENTRIC HOLE
THREAD QUANTITY PER INCH	10
THREADS PER INCH	32 CONCENTRIC HOLE

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